"Fire Fighting Robot", Our new project as well as the final project. The goal for this project is to build an autonomous viechle using 2 VEX robot kits that search for a candle in a predetermined maze and using a fire-extinguishing mechanism to put out the candle without disrupting the base which the candle is placed on.
The goal for today is to build a functional line sensor and flame sensor and install both sensors onto the VEX rebot that have been built week ago.
The flame sensor is composes of a phototransistor and a 10k ohm resistor. The phototransistor is connected to the power and the signal calble while the resistor is connected to the signal cable and ground.
The line sensor is composes of a detector (phototransistor) as well as an Infrared emitter. The infrared emitter is connected with a 220 ohm resistor in series and connected between power and gound. The dectector is at the same set up at the flame sensor.
Black tapes are used to wrap around the frontend of the emitter so that the IR light will not go stright into the detector. The emitter and the detector is then leveled and taped together with another layer of electric tape.
After installing the hardware and properly programmed, the robot is ready for line and flame detection test.
The robot should be able to stop as soon at it reach the black tap and rotate to search for the flame.
If it find the flame it should stop with the flame sensor pointing at it.
The flame sensor should be at the same level as the flame for best reading.
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Completeing the Toy
Some minor modification on the circuit and the programming code has been made.
Since the breadboard and the launchPad was too big to be fitted inside the toy, they are left outside for convenience.
The toy is now ready for final testing.
The final tests are successful, and the toy is ready for presentation on next Tuesday.
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